Transients nyob rau hauv hluav taws xob circuits

Xav lub transients nyob rau hauv hluav taws xob circuits, nws yog tsis yooj yim sua tsis hais qhov tseeb hais tias xws phenomena yog heev tej yam ntuj thiab rau ib co raws li paub tseeb tseeb. Ntxiv mus, txhua tus neeg ntsej muag nrog lawv cov manifestation nyob rau hauv koj lub neej txhua hnub. Piv txwv li, nyob rau hauv lub network ntawm lub caij cua kub (rhaub hluav taws xob, roj rhaub) kub tsis sawv indefinitely, thiab mus rau ib tug tej yam nqi uas yog nyob rau ntawm ob peb yam tseem ceeb. Xws li ambient kub, av noo theem, tus yam ntxwv ntawm cov hlau, thiab lwm yam Raws li, qhov cua txias no tshwm sim mus rau ib tug tej yam khov kho-lub xeev tus nqi, es tsis meej pes tsawg. Nyob rau hauv lwm yam lus, tag nrho cov lub cev phenomena yuav conditionally muab faib mus rau hauv nraum thiab khov kho. Tus thawj yog ib tug kev hloov ntawm lub thawj zaug thiab zaum kawg nruab.

Yuav ua li cas yog lub transients nyob rau hauv hluav taws xob circuits? Nyob rau hauv lub tsom xam ntawm tej Circuit Court koj yuav tsum xav txog ob hom: khov kho thiab nraum. Tus thawj yog yus muaj los ntawm recurrent ib chav tsev lub sij hawm instantaneous qhov tseem ceeb ntawm lub alternating tam sim no thiab voltage nyob rau hauv tag nrho cov qhov chaw hauv lub Circuit Court. Transients nyob rau hauv hluav taws xob circuits yog yooj yim kom to taub thaum cov kev pauv yog haujlwm, ces peb yuav tau tham txog qhov tshwm sim ntawm cov steady state. Txim ntawm cov nram qab no: ib tug mob nyob rau hauv uas muaj yog tsis muaj kev hloov, nyob rau hauv kev tshawb xav, yuav kav indefinitely.

Transients nyob rau hauv linear hluav taws xob circuits paub rau tag nrho cov. Muaj tseeb, nyob rau hauv txhua rooj plaub, hais tias thaum koj nias lub tsev hloov lub teeb kub tawm los yog txawm khib nyiab ya mus rau hauv lub heev iav teeb. Ntxiv mus, nws yuav tshwm sim raws li ib tug budgetary teeb, thiab nrog kim hom. Nyob rau hauv no "tsis muaj txim" transients nyob rau hauv hluav taws xob circuits. Nyob rau hauv cov ntaub ntawv no, cov nias hloov tshwm sim los ntawm kev hloov pib hloov txheej txheem uas hu switched (i.e., switching). Nyob rau hauv qhov tseeb, yog vim li cas tej zaum yuav sib txawv: hloov tsis ntawm lub hwj huam mov, nyob rau hauv particular ib tug luv luv Circuit Court . Sab nraud influences (magnetic teb, kub), etc. Direct xam unit rau hloov lub sij hawm voltage thiab tam sim no yog tau los ntawm txoj kev loj hlob ntawm differential sib npaug , thiab laij cov ib. Nyob rau hauv cov qauv, cov xov tooj ntawm derivative nyob ncaj qha rau ntawm lub ntsiab ntawm lub saw nws tus kheej.

Txij li thaum feem ntau lub caij ntawm kev hloov tus txheej txheem no xam tsis nyob rau hauv vib nas this thiab hundredths thiab thousandths ntawm ib tug thib ob, nws yog tej zaum ib lo lus nug ntawm seb cov lus teb. Tseeb, yog dab tsi yuav tshwm sim nyob rau hauv xws li ib tug luv luv lub sij hawm? Alas, qhov no yog li ntawd tsuas yog cov, thiab muaj kev qhia tau hais tias ib tug heev heev. Piv txwv li, lub hwj chim hu starters yeej ib txwm tsim los rau ntau dua tam sim no tshaj li lub nominal. Nyob rau hauv tas li ntawd, muaj mob yog feem ntau kaw arcing lag (tuav). Qhov no yog vim lub fact tias nyob rau hauv lub sij hawm ntawm switching (rau / qhib Circuit Court), tam sim no yog nce tenfold, thiab tshem tawm cov tau los ntawm cov kev daws yog muaj ntaub ntawv.

Xav txog transients rc circuits. Piv txwv li, muab rau hauv Circuit Court muaj lub hwj chim qhov twg los, ib tug khub ntawm resistors (R1 thiab R2), ib tug capacitor (C) thiab ib tug voltmeter (V), kev cob cog rua rau hauv parallel. Yog hais tias lub capacitor siv muaj ib tug muaj peev xwm ntawm kaum microfarads, thiab cov kuj R1 thiab R2 - ib tug ob peb puas kilo-ohms, ntsig txog, ces thaum lub hwj chim yog muab rau xub voltmeter tsis tam sim ntawd qhia ib tug tam sim no voltage nqi thiab maj lo ntawm xoom. Qhov no nraum yog tshwm sim los ntawm tsub zuj zuj ntawm xwb nyob rau hauv lub thawv. Raws li, qhov steady state tshwm sim nyob rau lub sij hawm thaum noj nqos tau cov lub reactive tivthaiv tsis tu tsis tseg.